This bowl is double-layered, with a stainless steel inner liner and an outer PP layer. 2 layers of abrasives pressed, water in the middle of the bowl is a normal phenomenon, stainless steel and plastic can not be glued together, the bowl will not be glued, it is originally for the baby's health, with glue is counterproductive. Therefore, if you can't accept this phenomenon, don't buy it, and this problem is not a quality problem, because it will not affect the use, please be aware. Because this bowl is pressed by two molds Due to the principle of heat expansion and cold contraction, when you wash the dish, the water will seep into the middle of the interlayer, which is a normal phenomenon It does not affect the use of the bowl at all The way to avoid it is to try not to use cold water when cleaning in the future, but to clean it with warm water, and do not use steel wool balls to clean as much as possible, and try to use cotton rags